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Unknown spotting

Description:

This tiny spider had a worm firmly attached to its back. Even when I gently touched the spider with a dry branch, to see if it was alive (and it was), the worm didn't move at all. Last photo shows the actual size of spider and worm.




No species ID suggestions

11 Comments

Argy Bee
Argy Bee a year ago

Incredible! Glad I found this one. Great spotting.

MayraSpringmann
MayraSpringmann a year ago

Interessante!

Chun, thank you very much for sharing this amazing video. Toshimi, thank you too.

ToshimiDowaki
ToshimiDowaki a year ago

Great spotting!

ChunXingWong
ChunXingWong a year ago

These parasitic wasps seem to prey on web-building spiders only for some reason. I do not know whether they choose specific species.
It is possible that the wasp has chosen this unlucky victim because it is the largest web-building spider in that area, after all Araneidae spiders are one of the largest web-building spiders. Theridiidae (smaller spiders) and Nephila (larger spiders) have also been recorded infected by wasp grubs too.
Other than wasp, young mantidflies are known to board on spiders.

http://www.youtube.com/watch?v=A_aHOnyXI...

Chun, I thought that the larva was too large for such a small spider. Could it be that the wasp preys on larger spiders, but preyed this one for lack of these? Do you think it is possible, or the wasps attack only specific species?

ChunXingWong
ChunXingWong a year ago

Seems like a parasitic wasp larva.
This parasite is far larger than all the ones I have spotted before.
They do not kill the spiders that easily, they want to have a fresh living meal everyday.

Gracias, Luis.

LuisStevens
LuisStevens a year ago

Great series Sergio

Yes, Juan, I can't but feel sorry for it.

Juan DiTrani
Juan DiTrani a year ago

Wow, poor spider... I have seen a couple of times parasited spiders like this, and is always very impressive!

Curitiba, PR, Brazil

Lat: -25.48, Long: -49.29

Spotted on Sep 6, 2012
Submitted on Sep 7, 2012

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